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Tupelues
nue.Introduction Modern Periodic Table
1. Complere the statements given belon -
by filling in the correct word in the blank from the words in bracket
1. The periodic table is based on the basic fundamental property
latonic weint farmic number/electronic configuration!
Moden Periodic Table has: (choose from groups 1 to 18 l periods 1 to 7)
2. Elements zanged in today, ader de teasie ranbers/weight)
3.
horizontal rons called
15/7/18/periods / goups]
4
vertical colurans called
16/8/18/periods/groups]
5. Transition from
character across a period.
(metallic/non-metallic)
6. Croups
7. Cross
called 'rol - representative elements.
8. Groups
'transition elements.
9. Group at extreme contains 'noble gases. (right/left]
10.
elements are placed in group 1[IA] & 2[11A].
(reactive, metallic/reactive, non-metallic)
11.
elements are placed in the upper right hand corner.
(non-metallic/metallic)
Periodicity in Properties:
12. Periodicity in properties ie, recurrence in properties are seen with
elements belonging to the same (period/group/sub-group] in the
periodic table after a difference of ,
- [18/2/32/8) in
atomic numbers due to recurrence of similar
[atomic weights/no. of shells/valence electronic configuration)
Position of Elemento: (choose from groups 1 to 18 & periods 1 to 7)
13. Alkali metals Li, Na are present in group
14. Alkaline earth metals Be, Mg are present in group
15. Post-transition metal - Al is present in group
16. Transition metal Fe is present in group
17. Transition metal - Zn is present in group
18. Lanthanide series are present in period
19. Actinide series are present in period
anto A and B.
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